Fix for ldc

SMILEBASIC/compiler.d

@@ -1255,22 +1255,14 @@ class Compiler
                 auto label = cast(OnS)c;
                 int[] addresses = new int[label.labels.length];
                 foreach(int index, wstring l; label.labels)
-                {
-                    try
                 {
                     if(label.sc.func)
                     {
-                            addresses[index] =label.sc.func.label[l];
+                        addresses[index] =label.sc.func.label.get(l, int.min);
                     }
                     else
                     {
-                            addresses[index] = globalLabel[l];
+                        addresses[index] = globalLabel.get(l, int.min);
-                        }
-                    }
-                    catch(Error re)
-                    {
-                        //undefined labelは実行時に出る(TECDEMOが動かない)
-                        addresses[index] = int.min;
                     }
                 }
                 if(label.isGosub)